Teach Math Interactive
  • GED
    • Answers
  • Home
    • Resources
    • Word Problems >
      • Answers to Geometry Word Problems
    • Problems of the Day >
      • Projects
      • Money Problems
  • Mathematics
    • Absolute Value
    • Adding and Subtracting Decimals
    • Divisibility Rules
    • Fractions
    • Integers
    • Least Common Multiple/Greatest Common Factor
    • Order of Operations >
      • Order of Operations Answer Key
    • Percents and Ratios >
      • Ratio
    • Prime and Composite Numbers
    • Numbers >
      • Properties of Real Numbers
      • Decimals
  • Algebra
    • Combining Like Terms
    • Create and evaluate expressions
    • Discover One Step Functions
    • Distributive Property >
      • The Distributive Property
    • Equations
    • Exponents >
      • Finding Powers of Signed Numbers
      • Exponential and Logarithmic Functions
    • Linear Equations
    • Mean, Median and Mode
    • Probability
    • Properties of Real Numbers >
      • Properties Answer key
    • Simplify Equations
    • Solve Equations with Variables on Both Sides
    • Systems of Two Linear Equations
    • Two Step Equations
    • Writing Terms in Algebraic Terms
  • Geometry
    • Angles and Lines
    • Conversions
    • Coordinate Geometry
    • Daily Lesson for Geometry
    • Identify and Plot Points on a Coordinate Plane
    • Polygons
    • Proofs
    • Surface Area of Prisms and Cylinders
    • Triangles
  • Misc
    • Logic
    • Test Problems >
      • Answers
    • CAHSEE >
      • Answers
    • Test Prep >
      • Answers
    • Careers
    • Mathography >
      • Journal Entries Lesson Plans
  • Money/Economics
    • Checks - Writing Dollars and Cents
    • 5 Tips to Save Money
  • Engineering
  • Telling Time

What is an Angle?

Picture

Angle

Picture
The amount of turn between two straight lines that have a common end point (the vertex).

What is angle C

Picture
To find angle C we take the sum of the known angles and take that from 360°

Sum of known angles = 110° + 75° + 50°  + 63°
Sum of known angles = 298°

Angle c = 360° − 298°
Angle c = 62°


Line And Angle Relationships from sedanor
Picture
Picture
Note the special symbol like a box in the angle. If you see this, it is a right angle. The 90° is rarely written in. If you see the box in the corner, you are being told it is a right angle.
Picture
The obtuse angle is the smaller angle. It is more than 90° and less than 180°.
Picture
A straight angle changes the direction to point the opposite way. Sometimes people say "You did a complete 180 on that!" ... meaning you completely changed your mind, idea or direction.
Picture
A Reflex Angle is more than 180° but less than 360°
Powered by Create your own unique website with customizable templates.